Matrix a below gives the fraction of the earth's area and the projected fraction of its population for five continents in 2050.
matrix b gives the earth's area (in square miles) and its projected 2050 population.
fraction
of area
0.162
0.119
0.066
0.298
fraction of
population
0.047 1 north america
0.086 south america
0.065 europe
0.582 asia
0.215 africa
a
=
0.202
area population
57,850,000 0
0 9,322,000,000
area
population
be
find the area (in square miles) and population of each given continent by finding ab.

c

step-by-step explanation:

i think because what else can be a sample of every member

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.

i dont know what you want me to answer for this but im guessing 2: 11?